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Digital Immortality — Backing Up the Human Soul

Could digital immortality really save you, or just create a convincing copy? We explore mind uploading, backups, identity, and whether survival means continuity… or redundancy.

Get Nebula using my link for 50% off an annual subscription: https://go.nebula.tv/isaacarthur.
Check out Joe’s Scott’s Oldest and Newest Places on Earth: https://nebula.tv/oldestnewest?ref=is… Watch my exclusive video Colonizing Ocean Worlds: https://nebula.tv/videos/isaacarthur–… SFIA Merchandise: https://isaac-arthur-shop.fourthwall… 🌐 Visit our Website: http://www.isaacarthur.net ❤️ Support us on Patreon: / isaacarthur ⭐ Support us on Subscribestar: https://www.subscribestar.com/isaac-a… 👥 Facebook Group: / 1,583,992,725,237,264 📣 Reddit Community: / isaacarthur 🐦 Follow on Twitter / X: / isaac_a_arthur 💬 SFIA Discord Server: / discord Credits: Digital Immortality — Backing Up the Human Soul Written, Produced & Narrated by: Isaac Arthur Select imagery/video supplied by Getty Images Chapters 0:00 Intro 1:43 What Are We Actually Backing Up? 7:36 The Roads to Immortality: Uploading vs Gradualism 13:56 The Copy Problem: You’re Still in the Chair 16:38 Practical Identity: What Do You Actually Do About It? 19:12 Why We’d Build Backups Anyway 22:00 Oldest & Newest 23:12 Failure Modes, Uses, and the Meaning of Survival.
Watch my exclusive video Colonizing Ocean Worlds: https://nebula.tv/videos/isaacarthur–…

🛒 SFIA Merchandise: https://isaac-arthur-shop.fourthwall…
🌐 Visit our Website: http://www.isaacarthur.net.
❤️ Support us on Patreon: / isaacarthur.
⭐ Support us on Subscribestar: https://www.subscribestar.com/isaac-a…
👥 Facebook Group: / 1583992725237264
📣 Reddit Community: / isaacarthur.
🐦 Follow on Twitter / X: / isaac_a_arthur.
💬 SFIA Discord Server: / discord.
Credits:
Digital Immortality — Backing Up the Human Soul.
Written, Produced & Narrated by: Isaac Arthur.
Select imagery/video supplied by Getty Images.

Chapters.
0:00 Intro.
1:43 What Are We Actually Backing Up?
7:36 The Roads to Immortality: Uploading vs Gradualism.
13:56 The Copy Problem: You’re Still in the Chair.
16:38 Practical Identity: What Do You Actually Do About It?
19:12 Why We’d Build Backups Anyway.
22:00 Oldest & Newest.
23:12 Failure Modes, Uses, and the Meaning of Survival.

The threefold value of surgery in previously irradiated brain metastases

Differentiating radiation necrosis (RN) from tumor recurrence (TR) in previously irradiated brain metastases (BM) remains a challenge. Imaging techniques lack sufficient diagnostic reliability, while therapeutic implications differ between both entities. This study aims to evaluate the diagnostic, therapeutic, and prognostic value of surgery in patients with progressive irradiated BM.

We studied patients who underwent surgical resection for progressive BM after prior irradiation. Histopathological diagnosis was classified as pure RN or TR. Clinical, radiological, surgical, and survival outcomes were analyzed.

In 73 lesions, histopathology demonstrated TR in 68.5% of lesions. Among TR, 84.0% showed mixed pathological features combining viable tumor cells and radionecrotic patterns. Patients initially treated by irradiation alone were significantly more likely to present TR, whereas surgery followed by postoperative irradiation was significantly associated with RN. Median interval between radiation and surgery was significantly longer in the RN group and breast cancer seemed related to RN. Postoperative clinical improvement occurred in 80.4% of symptomatic patients and corticosteroid discontinuation within one month occurred in 72.3% of patients, without significant difference between RN and TR. Median overall survival was longer in patients with RN (39 vs. 19 months, p = 0.025).

Abstract: 1 Division of Oncology Research and

1 Division of Oncology Research and.

2Molecular Pharmacology and Experimental Therapeutics Program, Mayo Clinic Graduate School of Biomedical Sciences, Mayo Clinic, Rochester, Minnesota, USA.

Address correspondence to: Martin E. Fernandez-Zapico, Mayo Clinic, 200 First St. SW, Rochester, Minnesota 55,905, USA. Phone: 1.507.255.0285; Email: [email protected].

How brain cells restore healthy growth and connections after a disease-causing genetic deletion

Scientists at Virginia Tech’s Fralin Biomedical Research Institute at VTC have discovered how an experimental therapy can help brain cells overcome the effects of a disease-causing genetic deletion. Instead of repairing the deletion and its immediate consequences, the therapy redirects brain development by helping at-risk neurons grow and connect more normally.

The findings, published in Disease Models & Mechanisms, suggest that some genetic brain disorders may be treated by targeting the cellular mechanisms disrupted by a genetic change rather than repairing the genetic change itself.

Single patch merges multiple physiological signals for simpler health monitoring

Wearable health monitors have grown increasingly capable, but most are still limited by the fact that tracking different types of body signals requires separate sensors, each with its own circuitry and patch of skin. That leads to bulkier devices, higher power consumption and greater discomfort for anyone who needs round-the-clock monitoring.

A research team led by Assistant Professor Liu Yuxin from the Department of Biomedical Engineering at the College of Design and Engineering, National University of Singapore (NUS CDE), has developed a cross-modal skin sensor that overcomes this constraint.

Named X-Sig, the device fuses the body’s electrical impulses, such as heart rhythms and muscle signals, with its mechanical signals, such as pulse pressure waves and the forces generated by muscle contractions, into a single composite waveform transmitted through one channel.

Plant polymer lignin shows promise for future bone regeneration

A new study reveals that lignin — a natural plant polymer — can be transformed into a bioactive material that promotes the formation of bone-like minerals while supporting the growth of bone-forming cells. Inspired by the natural partnership between lignin and silica in plants, the research offers a promising step toward sustainable, plant-based materials for future bone regeneration therapies.

A naturally abundant plant material best known for giving trees and crops their strength may one day help repair broken bones, according to a new study led by postdoctoral researcher Dr. Srinath Palakurthy and Prof. Rivka Elbaum of the Hebrew University of Jerusalem. The research demonstrates that lignin — a major structural component of plants — can be engineered into a bioactive material that encourages the formation of hydroxyapatite, the mineral that gives human bones and teeth their strength.

Published in ACS Biomaterials Science & Engineering, the study offers a promising step toward more sustainable, plant-based alternatives to current bone graft materials, many of which are derived from animals or synthetic sources. Such materials are increasingly sought after as researchers work to develop safer, more environmentally friendly solutions for repairing damaged bone.

Intel Emerges as America’s Only LeadingEdge Chipmaker as RAMPC Hands the Department of War Domestic 18A Production

Intel has completed its RAMP-C program, which now aims to enable customers to move from test chips to domestic high-volume manufacturing.

Press Release: Intel Foundry has completed the Rapid Assured Microelectronics Prototypes — Commercial (RAMP-C) program. Launched in September 2021, the program supported development of domestic, leading-edge CMOS technology and manufacturing in the United States, establishing a foundation for expanded trusted domestic semiconductor manufacturing.

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